My thoughts exactly ed, my hope is that this will make a consistent stable package management platform though. The problem with the open source ones is that there are too many and not all of them have all the same packages, a problem that doesn't exist on Linux for the most part, that I am hoping the introduction of Microsoft's package manager will solve.
Because they are community driven and the windows user community is not inclined (or know about) opensource software, they are more inclined towards piracy or installing/buying stuff that may or may not : work as advertised, breack your system, infect you with addware, spyware, etc. and other not very smart customs.
If they were more community/safety inclined, one of those FOSS package managers would be common knowledge and have milliards of free/libre applications and even a store for the ones that cost money.
But in general yes, this is good news for the windows user, if done properly and if kept working through the years. Both huge IFs in regards to microsoft and how much it cares about it's costumers.